/* =========================================================
   KCS SYSTEMS
   Main Stylesheet
   ========================================================= */


/* ================= VARIABLES ================= */

:root {
    --navy: #101828;
    --dark-navy: #0b1220;
    --blue: #2463eb;
    --blue-dark: #174dcc;
    --white: #ffffff;
    --off-white: #f7f8fa;
    --light-gray: #e5e7eb;
    --medium-gray: #667085;
    --text: #101828;

    --container: 1240px;
}


/* ================= RESET ================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;

    color: var(--text);
    background: var(--white);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

.container {
    width: min(90%, var(--container));
    margin: 0 auto;
}


/* ================= HEADER ================= */

.site-header {
    width: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--light-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    height: 88px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--blue);
}

.nav {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav a {
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav a:hover {
    color: var(--blue);
}

.nav-contact {
    border: 1px solid var(--navy);
    padding: 11px 20px;
}

.nav-contact:hover {
    background: var(--navy);
    color: var(--white) !important;
}


/* ================= COMMON TYPOGRAPHY ================= */

.section-label,
.eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.17em;
    color: var(--blue);
}

.section-heading {
    margin-bottom: 65px;
}

.section-heading h2 {
    margin-top: 15px;

    font-size: clamp(2.5rem, 5vw, 4.8rem);
    line-height: 1;
    letter-spacing: -0.055em;
    font-weight: 600;
}


/* ================= HERO ================= */

.hero {
    min-height: 760px;

    display: flex;
    align-items: center;

    padding: 100px 0;
}

.hero-content {
    width: min(90%, 1240px);
}

.eyebrow {
    margin-bottom: 30px;
}

.hero h1 {
    max-width: 1100px;

    font-size: clamp(4rem, 8vw, 7.5rem);
    line-height: 0.93;
    letter-spacing: -0.065em;
    font-weight: 600;
}

.hero h1 span {
    display: block;
    color: var(--blue);
}

.hero-description {
    max-width: 630px;

    margin-top: 40px;

    font-size: 1.3rem;
    line-height: 1.6;
    color: var(--medium-gray);
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 40px;

    margin-top: 45px;
}

.button {
    display: inline-flex;
    align-items: center;
    gap: 35px;

    padding: 17px 24px;

    font-weight: 600;
}

.button-primary {
    background: var(--blue);
    color: var(--white);
}

.button-primary:hover {
    background: var(--blue-dark);
}

.arrow {
    font-size: 1.3rem;
}

.text-link {
    font-weight: 600;
}

.text-link span {
    margin-left: 8px;
}


/* ================= INTRO ================= */

.intro {
    padding: 120px 0;
    background: var(--off-white);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 80px;
}

.intro h2 {
    max-width: 900px;

    font-size: clamp(2.6rem, 5vw, 5rem);
    line-height: 1.05;
    letter-spacing: -0.055em;
    font-weight: 500;
}

.intro h2 em {
    color: var(--blue);
    font-style: normal;
}

.intro-grid > div:last-child > p {
    max-width: 700px;

    margin-top: 35px;

    font-size: 1.15rem;
    color: var(--medium-gray);
}


/* ================= SERVICES ================= */

.services {
    padding: 130px 0;
}

.service-row {
    display: grid;
    grid-template-columns: 100px 1.2fr 1fr;
    gap: 45px;

    padding: 60px 0;

    border-top: 1px solid var(--light-gray);
}

.service-row:last-child {
    border-bottom: 1px solid var(--light-gray);
}

.service-number {
    font-size: 0.85rem;
    color: var(--blue);
    font-weight: 700;
}

.service-title h3 {
    max-width: 450px;

    font-size: clamp(2rem, 3vw, 3.2rem);
    line-height: 1.05;
    letter-spacing: -0.045em;
    font-weight: 500;
}

.service-description > p {
    margin-bottom: 25px;

    font-size: 1.05rem;
    color: var(--medium-gray);
}

.service-description ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-description li {
    position: relative;

    padding-left: 20px;

    font-size: 0.95rem;
}

.service-description li::before {
    content: "—";

    position: absolute;
    left: 0;

    color: var(--blue);
}


/* ================= ABOUT ================= */

.about {
    padding: 140px 0;

    background: var(--navy);
    color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 100px;
}

.light-label {
    color: #91afff;
}

.about h2 {
    max-width: 700px;

    margin-top: 25px;

    font-size: clamp(3rem, 5vw, 5.2rem);
    line-height: 1;
    letter-spacing: -0.055em;
    font-weight: 500;
}

.about-copy {
    align-self: end;
}

.about-copy p {
    margin-bottom: 25px;

    color: #cbd1dc;
    font-size: 1.05rem;
}

.about-copy .large-copy {
    color: var(--white);
    font-size: 1.4rem;
    line-height: 1.5;
}


/* ================= APPROACH ================= */

.approach {
    padding: 130px 0;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);

    border-top: 1px solid var(--light-gray);
    border-bottom: 1px solid var(--light-gray);
}

.approach-card {
    min-height: 340px;

    padding: 40px 30px;

    border-right: 1px solid var(--light-gray);
}

.approach-card:last-child {
    border-right: none;
}

.approach-card span {
    display: block;

    margin-bottom: 80px;

    color: var(--blue);
    font-size: 0.8rem;
    font-weight: 700;
}

.approach-card h3 {
    margin-bottom: 20px;

    font-size: 1.8rem;
    font-weight: 500;
    letter-spacing: -0.035em;
}

.approach-card p {
    color: var(--medium-gray);
    font-size: 0.95rem;
}


/* ================= CONTACT CTA ================= */

.contact-cta {
    padding: 130px 0;

    background: var(--blue);
    color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 80px;
}

.contact-label {
    color: #dce6ff;
}

.contact-cta h2 {
    max-width: 700px;

    margin-top: 20px;

    font-size: clamp(3.5rem, 7vw, 6.5rem);
    line-height: 0.95;
    letter-spacing: -0.06em;
    font-weight: 500;
}

.contact-content {
    align-self: end;
}

.contact-content p {
    max-width: 440px;

    margin-bottom: 35px;

    font-size: 1.2rem;
    color: #e6ecff;
}

.contact-email {
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 20px 0;

    border-bottom: 1px solid rgba(255,255,255,0.6);

    font-size: 1.15rem;
    font-weight: 600;
}

.contact-email span {
    font-size: 1.4rem;
}


/* ================= FOOTER ================= */

footer {
    padding: 80px 0 30px;

    background: var(--dark-navy);
    color: var(--white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 80px;

    padding-bottom: 80px;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 20px;
}

.footer-brand p {
    max-width: 300px;
    color: #98a2b3;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a:hover,
.footer-contact a:hover {
    color: #91afff;
}

.footer-contact p {
    margin-bottom: 12px;
    color: #98a2b3;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;

    padding-top: 25px;

    border-top: 1px solid #283244;

    color: #98a2b3;
    font-size: 0.85rem;
}


/* ================= RESPONSIVE ================= */

@media (max-width: 900px) {

    .nav {
        gap: 18px;
    }

    .nav a:not(.nav-contact) {
        display: none;
    }

    .hero {
        min-height: 650px;
    }

    .hero h1 {
        font-size: clamp(3.5rem, 12vw, 6rem);
    }

    .intro-grid,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .service-row {
        grid-template-columns: 60px 1fr;
    }

    .service-description {
        grid-column: 2;
    }

    .approach-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .approach-card:nth-child(2) {
        border-right: none;
    }

    .approach-card:nth-child(-n+2) {
        border-bottom: 1px solid var(--light-gray);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}


@media (max-width: 600px) {

    .container {
        width: 88%;
    }

    .nav-container {
        height: 72px;
    }

    .nav-contact {
        padding: 9px 14px;
    }

    .hero {
        padding: 75px 0;
    }

    .hero h1 {
        font-size: 3.4rem;
    }

    .hero-description {
        font-size: 1.05rem;
    }

    .hero-actions {
        align-items: flex-start;
        flex-direction: column;
        gap: 25px;
    }

    .intro,
    .services,
    .approach,
    .about,
    .contact-cta {
        padding: 85px 0;
    }

    .service-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-description {
        grid-column: auto;
    }

    .approach-grid {
        grid-template-columns: 1fr;
    }

    .approach-card,
    .approach-card:nth-child(2) {
        border-right: none;
        border-bottom: 1px solid var(--light-gray);
    }

    .approach-card:last-child {
        border-bottom: none;
    }

    .approach-card span {
        margin-bottom: 50px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-brand {
        grid-column: auto;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
    }

}